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PostgreSQL 10 High Performance

You're reading from   PostgreSQL 10 High Performance Expert techniques for query optimization, high availability, and efficient database maintenance

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Product type Paperback
Published in Apr 2018
Publisher Packt
ISBN-13 9781788474481
Length 508 pages
Edition 3rd Edition
Languages
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Author (1):
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Enrico Pirozzi Enrico Pirozzi
Author Profile Icon Enrico Pirozzi
Enrico Pirozzi
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Toc

Table of Contents (18) Chapters Close

Preface 1. PostgreSQL Versions FREE CHAPTER 2. Database Hardware 3. Database Hardware Benchmarking 4. Disk Setup 5. Memory for Database Caching 6. Server Configuration Tuning 7. Routine Maintenance 8. Database Benchmarking 9. Database Indexing 10. Query Optimization 11. Database Activity and Statistics 12. Monitoring and Trending 13. Pooling and Caching 14. Scaling with Replication 15. Partitioning Data 16. Avoiding Common Problems 17. Other Books You May Enjoy

Sample disk results

Here's a summary of what was measured for the laptop drive tested in detail previously, as well as a desktop drive both alone and in a RAID array as a second useful data point:

Disks

Seq read

Seq write

Bonnie++ seeks

sysbench seeks

Commits per sec

Seagate 320GB 7200.4 laptop

71

58

232 @ 4GB

194 @ 4GB

105 or 1048

WD160GB 7200RPM

59

54

177 @ 16GB

56 @ 100GB

10212

3X WD160GB RAID 0

125

119

371 @ 16GB

60 @ 100GB

10855

Note how all the seek-related information is reported here relative to the size of the area being used to seek over. This is a good habit to adopt. Also note that in the laptop rate, two commit rates are reported. The lower value is without the write cache enabled (just under the rotation rate of 120 rotations/second), while the higher one has it turned on, and is therefore providing...

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